Dust jacket complete -- not price-clipped -- but frayed and darkened to edges. If the publisher's statement can be believed -- that Gollancz first printings from 1928 through 1976 contain no statement of "impression" to the copyright page, while any and all later printings are there identified as "second impression," "third impression," etc. -- than this is a first printing of this interesting and highly unusual bibliomystery, in a clearly marked "Second Impression" dust jacket (both 1958.) When a mummified corpse in found in Big Ben's bell housing, an M.P. discovers its identify through research in the House of Commons Library. (Since the author long worked in that library -- coincidentally enough in the Research Department -- a considerable level of accuracy can be presumed.) Though the 1959 U.S. first from Dodd Mead is sometimes priced higher, Otto Penzler warns that edition "is dramatically shorter" then this U.K. true first edition -- presumably because it was feared American readers would grow quickly bored with "all that historical stuff." 266 pp.